Corydalis montana

Capaurimine, C20H23O6N, has been found only in Corydalis montana (29) and C. pallida (45). It crystallizes from chloroform-methanol in stout prisms which melt at 212° and have [a] —287° (chloroform). It has two phenolic hydroxyls and three methoxyls and on methylation with diazomethane yields capaurine 0-methyl ether. On ethylation with diazoethane it yields an 0,0-diethyl ether which on complete oxidation with permanganate gave a mixture of 3-ethoxy-4,5-dimethoxy- and 3-ethoxy-4-meth-oxyphthalic acids, both identified as their V-methylimides. Capaurimine is therefore L (4). 

Corydaline, C22H27O4N, was first isolated, obviously in impure form, from Corydalis tuberosa by Wackenroder (242). It has since been found in C. ambigua (24), C. aurea (28), C. Montana (29), and C. platycarpa (46). It crystallizes from hot methanol in stout hexagonal prisms and has... 

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